ME(w/o STI)-172
Cam Carrier
MECHANICAL
20.Cam Carrier
A: REMOVAL
1. CAM CARRIER RH
1) Remove the engine from the vehicle. <Ref. to ME(w/o STI)-48, REMOVAL, Engine Assembly.>
2) Remove the chain cover. <Ref. to ME(w/o STI)-93, REMOVAL, Chain Cover.>
3) Remove the timing chain RH. <Ref. to ME(w/o STI)-116, TIMING CHAIN RH, REMOVAL, Timing Chain
Assembly.>
4) Remove the rocker cover RH. <Ref. to ME(w/o STI)-152, ROCKER COVER RH, REMOVAL, Rocker Cov-
er.>
5) Remove the clip holding the engine harness from cam carrier RH.
ME-06694
15WRX_STI_US_EN.book 172 ージ 20  
ME(w/o STI)-173
Cam Carrier
MECHANICAL
6) Remove the oil pipe assembly from the scavenge pump and cam carrier RH.
7) Disconnect the water pipe hose from oil pan upper and EGR cooler, and remove the water pipe assembly.
ME-07995
ME-06696
15WRX_STI_US_EN.book 173 ージ 20  
ME(w/o STI)-174
Cam Carrier
MECHANICAL
8) When disassembling the cam carrier RH
NOTE:
When disassembling the cam carrier RH, perform the following steps also.
(1) Remove the scavenge pump. <Ref. to LU(w/o STI)-43, REMOVAL, Scavenge Pump.>
(2) Remove the cam sprocket RH. <Ref. to ME(w/o STI)-141, CAM SPROCKET RH, REMOVAL, Cam
Sprocket.>
9) Set the part so that the cam carrier RH is on the upper side.
10) Loosen the bolts holding the cam carrier RH equally, a little at a time in numerical sequence as shown
in the figure and remove the cam carrier RH.
11) Remove the O-ring and the roller rocker arm from cylinder head RH.
NOTE:
Be careful not to confuse the roller rocker arms.
ME-07996
(2)
(1)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
ME-06698
15WRX_STI_US_EN.book 174 ージ 20  
ME(w/o STI)-175
Cam Carrier
MECHANICAL
12) Remove the valve shim and the roller rocker arm pivot from cylinder head RH.
NOTE:
Be careful not to confuse the valve shim and the roller rocker arm pivot.
13) Remove the liquid gasket from cam carrier RH and cylinder head RH.
2. CAM CARRIER LH
1) Remove the engine from the vehicle. <Ref. to ME(w/o STI)-48, REMOVAL, Engine Assembly.>
2) Remove the chain cover. <Ref. to ME(w/o STI)-93, REMOVAL, Chain Cover.>
3) Remove the timing chain LH. <Ref. to ME(w/o STI)-119, TIMING CHAIN LH, REMOVAL, Timing Chain
Assembly.>
4) Remove the intake manifold. <Ref. to FU(w/o STI)-18, REMOVAL, Intake Manifold.>
5) Remove the rocker cover LH. <Ref. to ME(w/o STI)-154, ROCKER COVER LH, REMOVAL, Rocker Cov-
er.>
6) Remove the clip holding the engine harness from cam carrier LH.
ME-06699
ME-07391
15WRX_STI_US_EN.book 175 ージ 20  
ME(w/o STI)-176
Cam Carrier
MECHANICAL
7) Remove the fuel pipe protector from the high-pressure fuel pump case.
8) Remove the fuel pump insulator (A) from the high-pressure fuel pump, and then remove the fuel pipe in-
sulator No. 1 (B) from the high-pressure fuel delivery pipe.
ME-06701
ME-07997
(B)
(A)
15WRX_STI_US_EN.book 176 ージ 20  
ME(w/o STI)-177
Cam Carrier
MECHANICAL
9) Disconnect the connector (A) from the high-pressure fuel pump, and remove the fuel delivery pipe from the
high-pressure fuel pump.
NOTE:
Disconnect the quick connector as shown in the figure.
(a) Slider
ME-05201
(a)
(a)
ME-07998
(A)
15WRX_STI_US_EN.book 177 ージ 20  
ME(w/o STI)-178
Cam Carrier
MECHANICAL
10) Remove the high-pressure fuel delivery pipe from the high-pressure fuel pump and fuel injector pipe.
11) Disconnect the water pipe hose from oil pan upper, and remove the water pipe assembly.
12) When disassembling the cam carrier LH
NOTE:
When disassembling the cam carrier LH, perform the following steps also.
(1) Remove the high-pressure fuel pump. <Ref. to FU(w/o STI)-74, REMOVAL, High Pressure Fuel
Pump.>
(2) Remove the cam sprocket LH. <Ref. to ME(w/o STI)-142, CAM SPROCKET LH, REMOVAL, Cam
Sprocket.>
ME-07999
ME-07392
15WRX_STI_US_EN.book 178 ージ 20  
ME(w/o STI)-179
Cam Carrier
MECHANICAL
13) Set the part so that the cam carrier LH is on the upper side.
14) Loosen the bolts holding the cam carrier LH equally, a little at a time in numerical sequence as shown in
the figure and remove the cam carrier LH.
15) Remove the O-ring and the roller rocker arm from cylinder head LH.
NOTE:
Be careful not to confuse the roller rocker arms.
ME-08000
(2)
(1)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
ME-06706
15WRX_STI_US_EN.book 179 ージ 20  
ME(w/o STI)-180
Cam Carrier
MECHANICAL
16) Remove the valve shim and the roller rocker arm pivot from cylinder head LH.
NOTE:
Be careful not to confuse the valve shim and the roller rocker arm pivot.
17) Remove the liquid gasket from cam carrier LH and cylinder head LH.
B: INSTALLATION
1. CAM CARRIER RH
1) Set the part so that the cylinder head RH is on the upper side.
2) Apply engine oil to the valve shim and the roller rocker arm pivot, and install the valve shim and the roller
rocker arm pivot to the cylinder head RH.
ME-06707
ME-06699
15WRX_STI_US_EN.book 180 ージ 20  
ME(w/o STI)-181
Cam Carrier
MECHANICAL
3) Apply engine oil to the O-ring and the roller rocker arm, and install the O-ring and the roller rocker arm to
the cylinder head RH.
NOTE:
Use new O-rings.
ME-06698
15WRX_STI_US_EN.book 181 ージ 20  
ME(w/o STI)-182
Cam Carrier
MECHANICAL
4) Apply liquid gasket to the mating surface of cam carrier RH as shown in the figure.
NOTE:
Before applying liquid gasket, degrease the old liquid gasket seal surface of the cylinder head RH and cam
carrier RH.
Install within 5 min. after applying liquid gasket.
Liquid gasket:
THREE BOND 1217G (Part No. 0877Y0100) or equivalent
Liquid gasket applying diameter:
3
±
0.5 mm (0.1181
±
0.0197 in)
(A) Range A (D) Liquid gasket applying position of
mating surfaces other than range
A
(G) 0±0.5 mm (0±0.0197 in)
(B) φ18 mm (0.7087 in) (E) φ3±0.5 mm (0.1181±0.0197 in) (H) Chamfer edge
(C) Liquid gasket applying position of
mating surfaces of range A
(F) 1 mm (0.0394 in) or less
ME-06708
A-A
(C)
B-B
(D)
(H)
(F)
(E)
(H)
(G)
(E)
(A)
(A)
A
A
(B)
(A)
(B)
(B)
B
B
15WRX_STI_US_EN.book 182 ージ 20  
ME(w/o STI)-183
Cam Carrier
MECHANICAL
5) Install the cam carrier RH to the cylinder head RH.
(1) Mount the cam carrier RH, then tighten all bolts with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in nu-
merical order as shown in the figure.
NOTE:
Set the intake camshaft RH and the exhaust camshaft RH to the zero-lift position as shown in the figure.
ME-08001
ME-08002
(8)
(9)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
15WRX_STI_US_EN.book 183 ージ 20  
ME(w/o STI)-184
Cam Carrier
MECHANICAL
(2) Loosen the bolts (3 places) by 180° in numerical order as shown in the figure.
(3) Tighten the bolts (3 places) with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in numerical order as shown
in the figure.
ME-08003
(1)
(2)
(3)
ME-08004
(3)
(2)
(1)
15WRX_STI_US_EN.book 184 ージ 20  
ME(w/o STI)-185
Cam Carrier
MECHANICAL
(4) Loosen the bolts (3 places) by 180° in numerical order as shown in the figure.
(5) Tighten the bolts (3 places) with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in numerical order as shown
in the figure.
ME-08005
(1)
(2)
(3)
ME-08006
(3)
(2)
(1)
15WRX_STI_US_EN.book 185 ージ 20  
ME(w/o STI)-186
Cam Carrier
MECHANICAL
(6) Loosen the bolts (3 places) by 180° in numerical order as shown in the figure.
(7) Tighten the bolts (3 places) with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in numerical order as shown
in the figure.
NOTE:
After tightening, if the liquid gasket is squeezed out onto the seal surface of the chain cover, completely re-
move any squeezed-out liquid gasket.
6) Set the part so that the intake manifold is on the upper side.
ME-08007
(2)
(1)
(3)
ME-08008
(2)
(3)
(1)
15WRX_STI_US_EN.book 186 ージ 20  
ME(w/o STI)-187
Cam Carrier
MECHANICAL
7) When the cam carrier RH has been disassembled
NOTE:
When the cam carrier RH has been disassembled, perform the following steps also.
(1) Install the cam sprocket RH. <Ref. to ME(w/o STI)-144, CAM SPROCKET RH, INSTALLATION, Cam
Sprocket.>
(2) Install the scavenge pump. <Ref. to LU(w/o STI)-44, INSTALLATION, Scavenge Pump.>
NOTE:
When installing the scavenge pump, do not turn the intake camshaft RH to the outside of range of zero-lift (in
range where it can be turned lightly by hand).
8) Check the cam clearance. <Ref. to ME(w/o STI)-43, WHEN TIMING CHAIN ASSEMBLY IS REMOVED,
INSPECTION, Cam Clearance.>
9) Connect the water pipe hose to oil pan upper and EGR cooler, and install the water pipe assembly.
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
ME-06696
15WRX_STI_US_EN.book 187 ージ 20  
ME(w/o STI)-188
Cam Carrier
MECHANICAL
10) Install the oil pipe assembly to the scavenge pump and cam carrier RH.
(1) Set the oil pipe assembly to the scavenge pump and cam carrier RH, and temporarily tighten the bolts
which secure the oil pipe assembly to the scavenge pump and cam carrier RH.
NOTE:
Use a new gasket.
ME-07995
15WRX_STI_US_EN.book 188 ージ 20  
ME(w/o STI)-189
Cam Carrier
MECHANICAL
(2) Tighten the bolts which secure the oil pipe assembly to the scavenge pump and cam carrier RH in nu-
merical order as shown in the figure.
Tightening torque:
T1: 6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
T2: 29 N·m (3.0 kgf-m, 21.4 ft-lb)
11) Secure the engine harness to the cam carrier RH with a clip.
12) Install the rocker cover RH. <Ref. to ME(w/o STI)-161, ROCKER COVER RH, INSTALLATION, Rocker
Cover.>
13) Install the timing chain RH. <Ref. to ME(w/o STI)-133, TIMING CHAIN RH, INSTALLATION, Timing
Chain Assembly.>
14) Install the chain cover. <Ref. to ME(w/o STI)-101, INSTALLATION, Chain Cover.>
ME-08009
(2)
(1)
(3)
(4)
T1
T1
T2
ME-06694
15WRX_STI_US_EN.book 189 ージ 20  
ME(w/o STI)-190
Cam Carrier
MECHANICAL
15) Install the engine to the vehicle. <Ref. to ME(w/o STI)-61, INSTALLATION, Engine Assembly.>
2. CAM CARRIER LH
1) Set the part so that the cylinder head LH is on the upper side.
2) Apply engine oil to the valve shim and the roller rocker arm pivot, and install the valve shim and the roller
rocker arm pivot to the cylinder head LH.
3) Apply engine oil to the O-ring and the roller rocker arm, and install the O-ring and the roller rocker arm to
the cylinder head LH.
NOTE:
Use new O-rings.
ME-06707
ME-06706
15WRX_STI_US_EN.book 190 ージ 20  
ME(w/o STI)-191
Cam Carrier
MECHANICAL
4) Apply liquid gasket to the mating surface of cam carrier LH as shown in the figure.
NOTE:
Before applying liquid gasket, degrease the old liquid gasket seal surface of the cylinder head LH and cam
carrier LH.
Install within 5 min. after applying liquid gasket.
Liquid gasket:
THREE BOND 1217G (Part No. 0877Y0100) or equivalent
Liquid gasket applying diameter:
3
±
0.5 mm (0.1181
±
0.0197 in)
(A) Range A (D) Liquid gasket applying position of
mating surfaces other than range
A
(G) 0±0.5 mm (0±0.0197 in)
(B) φ18 mm (0.7087 in) (E) φ3±0.5 mm (0.1181±0.0197 in) (H) Chamfer edge
(C) Liquid gasket applying position of
mating surfaces of range A
(F) 1 mm (0.0394 in) or less
ME-06749
A-A
(C)
B-B
(D)
(H)
(F)
(E)
(H)
(G)
(E)
(A)
(B)
(A)
A
A
(B)
B
B
15WRX_STI_US_EN.book 191 ージ 20  
ME(w/o STI)-192
Cam Carrier
MECHANICAL
5) Install the cam carrier LH to the cylinder head LH.
(1) Mount the cam carrier LH, then tighten all bolts with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in nu-
merical order as shown in the figure.
NOTE:
Set the intake camshaft LH and the exhaust camshaft LH to the zero-lift position as shown in the figure.
ME-06718
ME-08011
(8)
(9)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
15WRX_STI_US_EN.book 192 ージ 20  
ME(w/o STI)-193
Cam Carrier
MECHANICAL
(2) Loosen the bolts (3 places) by 180° in numerical order as shown in the figure.
(3) Tighten the bolts (3 places) with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in numerical order as shown
in the figure.
ME-08012
(1)
(2)
(3)
ME-08013
(3)
(2)
(1)
15WRX_STI_US_EN.book 193 ージ 20  
ME(w/o STI)-194
Cam Carrier
MECHANICAL
(4) Loosen the bolts (3 places) by 180° in numerical order as shown in the figure.
(5) Tighten the bolts (3 places) with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in numerical order as shown
in the figure.
ME-08014
(1)
(2)
(3)
ME-08015
(3)
(2)
(1)
15WRX_STI_US_EN.book 194 ージ 20  
ME(w/o STI)-195
Cam Carrier
MECHANICAL
(6) Loosen the bolts (3 places) by 180° in numerical order as shown in the figure.
(7) Tighten the bolts (3 places) with a torque of 18 N·m (1.8 kgf-m, 13.3 ft-lb) in numerical order as shown
in the figure.
NOTE:
After tightening, if the liquid gasket is squeezed out onto the seal surface of the chain cover, completely re-
move any squeezed-out liquid gasket.
6) Set the part so that the installation surface of the intake manifold is on the upper side.
ME-08016
(3)
(1)
(2)
ME-08017
(1)
(3)
(2)
15WRX_STI_US_EN.book 195 ージ 20  
ME(w/o STI)-196
Cam Carrier
MECHANICAL
7) When the cam carrier LH has been disassembled
NOTE:
When the cam carrier LH has been disassembled, perform the following steps also.
(1) Install the cam sprocket LH. <Ref. to ME(w/o STI)-147, CAM SPROCKET LH, INSTALLATION, Cam
Sprocket.>
(2) Install the high-pressure fuel pump. <Ref. to FU(w/o STI)-78, INSTALLATION, High Pressure Fuel
Pump.>
NOTE:
Install the high-pressure fuel pump so that the cam lobes on the intake camshaft LH are positioned as shown
in the figure. Perform adjustment within the range of zero-lift (in range where it can be turned lightly by hand).
8) Check the cam clearance. <Ref. to ME(w/o STI)-43, WHEN TIMING CHAIN ASSEMBLY IS REMOVED,
INSPECTION, Cam Clearance.>
ME-06726
15WRX_STI_US_EN.book 196 ージ 20  
ME(w/o STI)-197
Cam Carrier
MECHANICAL
9) Connect the water pipe hose to oil pan upper, and install the water pipe assembly.
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
10) Temporarily tighten the flare nuts of the high-pressure fuel delivery pipe to the high-pressure fuel pump
and fuel injector pipe by hand until they are seated, and then tighten the flare nuts.
CAUTION:
Always use a new high-pressure fuel delivery pipe.
Tightening torque:
25 N·m (2.5 kgf-m, 18.4 ft-lb)
ME-07392
ME-07999
15WRX_STI_US_EN.book 197 ージ 20  
ME(w/o STI)-198
Cam Carrier
MECHANICAL
11) Install the fuel delivery pipe to the high-pressure fuel pump, and connect the connector (A) to the high-
pressure fuel pump.
CAUTION:
Check that there is no damage or dust on the quick connector. If necessary, clean the seal surface
of the pipe.
When connecting the quick connector, make sure to insert it all the way in before locking the slider.
When it is difficult to lock the slider, check that the connector is fully inserted.
After locking the slider, check again that the quick connector is securely connected.
NOTE:
Connect the quick connector as shown in the figure.
(a) Slider
ME-05211
(a)
(a)
ME-07998
(A)
15WRX_STI_US_EN.book 198 ージ 20  
ME(w/o STI)-199
Cam Carrier
MECHANICAL
12) Install the fuel pump insulator (A) to the high-pressure fuel pump, and then install the fuel pipe insulator
No. 1 (B) to the high-pressure fuel delivery pipe.
NOTE:
By pushing the sections (a) shown in the figure, fix the fuel pipe insulator No. 1 (B) to the high-pressure fuel
delivery pipe.
13) Temporarily tighten the bolts securing the fuel pipe protector to the high-pressure fuel pump case.
ME-08018
(a)
(B)
(A)
ME-06701
15WRX_STI_US_EN.book 199 ージ 20  
ME(w/o STI)-200
Cam Carrier
MECHANICAL
14) Secure the engine harness to the cam carrier LH with a clip.
15) Install the rocker cover LH. <Ref. to ME(w/o STI)-163, ROCKER COVER LH, INSTALLATION, Rocker
Cover.>
16) Install the intake manifold. <Ref. to FU(w/o STI)-29, INSTALLATION, Intake Manifold.>
17) Tighten the bolts securing the fuel pipe protector to the high-pressure fuel pump case.
Tightening torque:
19 N·m (1.9 kgf-m, 14.0 ft-lb)
18) Install timing chain LH. <Ref. to ME(w/o STI)-124, TIMING CHAIN LH, INSTALLATION, Timing Chain
Assembly.>
19) Install the chain cover. <Ref. to ME(w/o STI)-101, INSTALLATION, Chain Cover.>
20) Install the engine to the vehicle. <Ref. to ME(w/o STI)-61, INSTALLATION, Engine Assembly.>
ME-07391
ME-08030
15WRX_STI_US_EN.book 200 ージ 20  
ME(w/o STI)-201
Cam Carrier
MECHANICAL
C: DISASSEMBLY
1. CAM CARRIER RH
1) Remove the oil pipe from cam carrier RH.
2) Loosen the bolts (front camshaft cap RH, intake center camshaft cap RH, intake rear camshaft cap RH,
exhaust center camshaft cap RH, and exhaust rear camshaft cap RH) equally, a little at a time in numerical
sequence as shown in the figure, and remove each camshaft cap.
NOTE:
Arrange camshaft caps in order so that they can be installed in their original positions.
ME-06728
ME-06729
(5)
(9)
(1)
(2)
(4)
(3)
(11)
(12)
(10)
(7)
(8)
(6)
15WRX_STI_US_EN.book 201 ージ 20  
ME(w/o STI)-202
Cam Carrier
MECHANICAL
3) Remove the intake camshaft RH and the exhaust camshaft RH from cam carrier RH.
4) Remove the filter from cam carrier RH.
5) Remove the liquid gasket from cam carrier RH and front camshaft cap RH, intake rear camshaft cap RH
and exhaust rear camshaft cap RH.
ME-06730
ME-06731
15WRX_STI_US_EN.book 202 ージ 20  
ME(w/o STI)-203
Cam Carrier
MECHANICAL
2. CAM CARRIER LH
1) Loosen the bolts (front camshaft cap LH, intake center camshaft cap LH, intake rear camshaft cap LH, ex-
haust center camshaft cap LH and exhaust rear camshaft cap LH) equally, a little at a time in numerical se-
quence as shown in the figure, and remove each camshaft cap.
NOTE:
Arrange camshaft caps in order so that they can be installed in their original positions.
2) Remove the intake camshaft LH and the exhaust camshaft LH from cam carrier LH.
ME-06732
(1)
(6)
(8)
(9)
(7)
(12)
(13)
(11)
(2)
(4)
(3)
(5)
(10)
ME-06733
15WRX_STI_US_EN.book 203 ージ 20  
ME(w/o STI)-204
Cam Carrier
MECHANICAL
3) Remove the filter from cam carrier LH.
4) Remove the liquid gasket from cam carrier LH and front camshaft cap LH, intake rear camshaft cap LH
and exhaust rear camshaft cap LH.
D: ASSEMBLY
1. CAM CARRIER RH
1) Install the filter to the cam carrier RH.
NOTE:
Use a new filter.
Filter insert position:
Cam carrier RH end face 0
+0
–0.5
mm (
+0
–0.0197
in) position
(A) 0 — 0.5 mm (0 — 0.0197 in)
ME-06734
ME-06735
A-A
(A)
B-B
(A)
A
A
B B
15WRX_STI_US_EN.book 204 ージ 20  
ME(w/o STI)-205
Cam Carrier
MECHANICAL
2) Set the intake camshaft RH and the exhaust camshaft RH to the cam carrier RH.
NOTE:
Apply engine oil to the journals of cam carrier RH before setting the intake camshaft RH and exhaust cam-
shaft RH.
3) Install the front camshaft cap RH, intake center camshaft cap RH, intake rear camshaft cap RH, exhaust
center camshaft cap RH and exhaust rear camshaft cap RH.
(1) Apply liquid gasket to the mating surface of front camshaft cap RH, intake rear camshaft cap RH and
exhaust rear camshaft cap RH as shown in the figure.
CAUTION:
Do not apply liquid gasket excessively. Applying excessively may cause excess gasket to flow to-
ward camshaft journal, resulting in engine seizure.
Do not apply liquid gasket excessively to the intake center camshaft cap RH and exhaust center
camshaft cap RH.
NOTE:
Before applying liquid gasket, degrease the old liquid gasket seal surface of the front camshaft cap RH, in-
take rear camshaft cap RH, exhaust rear camshaft cap RH, and cam carrier RH.
Install within 5 min. after applying liquid gasket.
Liquid gasket:
THREE BOND 1217G (Part No. 0877Y0100) or equivalent
Liquid gasket applying diameter:
Mating surfaces other than ranges A and B
2
±
0.5 mm (0.0787
±
0.0197 in)
Mating surfaces of range A
3
+1
–0.5
mm (0.1181
+0.0394
–0.0197
in)
Mating surfaces of range B
3.5
±
0.5 mm (0.1378
±
0.0197 in)
(A) 28.5 mm (1.122 in) (E) Liquid gasket applying position of
mating surfaces of range B
(I) Chamfer edge
(B) Range A (F) Liquid gasket applying position of
mating surfaces other than range
A and range B
(J) 1 mm (0.0394 in) or less
(C) Range B (G) 0.5 mm (0.0197 in) (K) φ3.5±0.5 mm (0.1378±0.0197 in)
(D) Liquid gasket applying position of
mating surfaces of range A
(H) φ3
+1
–0.5
mm
(0.1181
+0.0394
–0.0197
in)
(L) φ2±0.5 mm (0.0787±0.0197 in)
ME-06736
A-A
(D)
:(B)
:(C)
C-C
(F)
B-B
(E)
(L)
(I)
(J)
AA
C
C
B
B
(G)
(H)
(I)
(K)
(I)
(J)
(A)
C
C
B
B
(A)
15WRX_STI_US_EN.book 205 ージ 20  
ME(w/o STI)-206
Cam Carrier
MECHANICAL
(2) Apply engine oil to the journals of each camshaft cap before setting the camshaft cap.
(3) Tighten the bolts which secure front camshaft cap RH, intake center camshaft cap RH, intake rear
camshaft cap RH, exhaust center camshaft cap RH and exhaust rear camshaft cap RH in numerical order
as shown in the figure.
Tightening torque:
18 N·m (1.8 kgf-m, 13.3 ft-lb)
4) Install the oil pipe to the cam carrier RH.
(1) Set the oil pipe to the cam carrier RH, and temporarily tighten the bolts which secure the oil pipe to the
cam carrier RH.
NOTE:
Use a new gasket.
ME-06737
(5)
(9)
(1)
(2)
(4)
(3)
(11)
(12)
(10)
(7)
(8)
(6)
ME-06728
15WRX_STI_US_EN.book 206 ージ 20  
ME(w/o STI)-207
Cam Carrier
MECHANICAL
(2) Tighten the bolts which secures the oil pipe to the cam carrier RH in numerical order as shown in the
figure.
Tightening torque:
T1: 6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
T2: 31 N·m (3.2 kgf-m, 22.9 ft-lb)
2. CAM CARRIER LH
1) Install the filter to the cam carrier LH.
NOTE:
Use a new filter.
Filter insert position:
Cam carrier LH end face 0
+0
–0.5
mm (
+0
–0.0197
in) position
2) Set the intake camshaft LH and the exhaust camshaft LH to the cam carrier LH.
NOTE:
Apply engine oil to the journals of cam carrier LH before setting the intake camshaft LH and exhaust camshaft LH.
(A) 0 — 0.5 mm (0 — 0.0197 in)
T2
ME-08010
(3)
(2)
(1)
T1
T2
T2
ME-06738
A-A
B-B
(A)
(A)
B B
A
A
15WRX_STI_US_EN.book 207 ージ 20  
ME(w/o STI)-208
Cam Carrier
MECHANICAL
3) Install the front camshaft cap LH, intake center camshaft cap LH, intake rear camshaft cap LH, exhaust
center camshaft cap LH and exhaust rear camshaft cap LH.
(1) Apply liquid gasket to the mating surface of front camshaft cap LH, intake rear camshaft cap LH and
exhaust rear camshaft cap LH as shown in the figure.
CAUTION:
Do not apply liquid gasket excessively. Applying excessively may cause excess gasket to flow to-
ward camshaft journal, resulting in engine seizure.
Do not apply liquid gasket excessively to the intake center camshaft cap LH and exhaust center
camshaft cap LH.
NOTE:
Before applying liquid gasket, degrease the old liquid gasket seal surface of the front camshaft cap LH, in-
take rear camshaft cap LH, exhaust rear camshaft cap LH, and cam carrier LH.
Install within 5 min. after applying liquid gasket.
Liquid gasket:
THREE BOND 1217G (Part No. 0877Y0100) or equivalent
Liquid gasket applying diameter:
Mating surfaces other than ranges A, B and C
2
±
0.5 mm (0.0787
±
0.0197 in)
Mating surfaces of range A
3.5
±
0.5 mm (0.1378
±
0.0197 in)
Mating surfaces of range B
3
±
0.5 mm (0.1181
±
0.0197 in)
Mating surfaces of range C
3
+1
–0.5
mm (0.1181
+0.0394
–0.0197
in)
(A) 28.5 mm (1.122 in) (G) Liquid gasket applying position of
mating surfaces of range A
(M) Chamfer edge
(B) 11.6 mm (0.4567 in) (H) Liquid gasket applying position of
mating surfaces of range B
(N) φ3±0.5 mm (0.1181±0.0197 in)
(C) 5.1 mm (0.2008 in) (I) Liquid gasket applying position of
mating surfaces of range C
(O) φ3
+1
–0.5
mm
(0.1181±
+0.0394
–0.0197
in)
(D) Range A (J) Liquid gasket applying position of
mating surfaces other than range
A, range B and range C
(P) 1 mm (0.0394 in) or less
(E) Range B (K) 0.5 mm (0.0197 in) (Q) φ2±0.5 mm (0.0787±0.0197 in)
(F) Range C (L) φ3.5±0.5 mm (0.1378±0.0197 in)
ME-06740
(L)
A-A
(G)
:(D)
:(E)
:(F)
(A)
(A)
C-C
(I)
B-B
(H)
(K)
(M)
AA
AA
D
D
D
D
(M)
(K)
(N)
D-D
(J)
(Q)
(M)
(P)
(O)
(K)
(M)
(C)
(B)
(C)
D
D
C
C
B
B
D
D
15WRX_STI_US_EN.book 208 ージ 20  
ME(w/o STI)-209
Cam Carrier
MECHANICAL
(2) Apply engine oil to the journals of each camshaft cap before setting the camshaft cap.
(3) Tighten the bolts which secure front camshaft cap LH, intake center camshaft cap LH, intake rear
camshaft cap LH, exhaust center camshaft cap LH and exhaust rear camshaft cap LH in numerical order
as shown in the figure.
Tightening torque:
18 N·m (1.8 kgf-m, 13.3 ft-lb)
E: INSPECTION
1) Visually check the cam carrier filter, and if clogging is found, replace with a new part.
2) Check the camshaft journals for damage and wear. Replace the camshaft if faulty.
3) Check the cam face condition of camshaft, and remove the minor faults by grinding with oil stone. Replace
the camshaft if uneven wear is found.
ME-06741
(4)
(8)
(6)
(5)
(7)
(11)
(10)
(12)
(3)
(1)
(2)
(9)
(13)
ME-08019
RH
LH
15WRX_STI_US_EN.book 209 ージ 20  
ME(w/o STI)-210
Cam Carrier
MECHANICAL
4) Using a dial gauge, check the camshaft bend. If it exceeds the limit, replace the camshaft.
NOTE:
Measurement should be performed at a temperature of 20°C (68°F).
Camshaft bend:
Limit
0.020 mm (0.00079 in)
ME-05235
15WRX_STI_US_EN.book 210 ージ 20  
ME(w/o STI)-211
Cam Carrier
MECHANICAL
5) Check the cam lobe height “H” and cam base circle diameter “A” of camshaft as shown in the figure, using
micrometer. If it is not within the standard, replace the camshaft.
NOTE:
Measurement should be performed at a temperature of 20°C (68°F).
Perform measurement of cam lobe height for fuel pump drive section at three points.
Camshaft cam lobe overall height H:
Intake
Valve drive section
Standard
40.34 — 40.44 mm (1.588 — 1.592 in)
Fuel pump drive section
Standard
41.95 — 42.05 mm (1.652 — 1.656 in)
Exhaust
Standard
40.20 — 40.30 mm (1.583 — 1.587 in)
Camshaft cam base circle diameter A:
Standard
34.0 mm (1.339 in)
(A) Valve drive section (B) Fuel pump drive section
ME-06743
A
H
H
H
H
(A)
(B)
15WRX_STI_US_EN.book 211 ージ 20  
ME(w/o STI)-212
Cam Carrier
MECHANICAL
6) Check the camshaft journal outer diameter using micrometer. If it is not within the standard, replace the
camshaft.
NOTE:
Measurement should be performed at a temperature of 20°C (68°F).
Measure outer diameter of each journal at several points, and read the value of most worn location.
Camshaft journal outer diameter:
Standard
25.946 — 25.963 mm (1.0215 — 1.0222 in)
7) Using a dial gauge, check the thrust clearance of the camshaft. If it is not within the standard or if uneven
wear is found, replace each camshaft cap and cam carrier as a set. If necessary replace the camshaft.
NOTE:
Measurement should be performed at a temperature of 20°C (68°F).
Set the dial gauge at end surface of camshaft.
Camshaft thrust clearance:
Standard
0.068 — 0.116 mm (0.0027 — 0.0047 in)
ME-05237
ME-06744
15WRX_STI_US_EN.book 212 ージ 20  
ME(w/o STI)-213
Cam Carrier
MECHANICAL
8) Check the oil clearance on the camshaft using a plastigauge.
NOTE:
Measurement should be performed at a temperature of 20°C (68°F).
(1) Remove the liquid gasket from cam carrier and front camshaft cap, intake rear camshaft cap and ex-
haust rear camshaft cap.
(2) Clean each camshaft cap and cam carrier journals.
(3) Set the camshaft to the cam carrier.
(4) Place a plastigauge across the camshaft journals of each camshaft and set the camshaft caps.
(5) Tighten the bolts which secure front camshaft cap, intake center camshaft cap, intake rear camshaft
cap, exhaust center camshaft cap and exhaust rear camshaft cap in numerical order as shown in the fig-
ure.
Tightening torque:
18 N·m (1.8 kgf-m, 13.3 ft-lb)
(6) Loosen the bolts (front camshaft cap, intake center camshaft cap, intake rear camshaft cap, exhaust
center camshaft cap and exhaust rear camshaft cap) equally, a little at a time in numerical sequence as
shown in the figure, and remove each camshaft cap.
ME-06745
RH
LH
(5)
(9)
(1)
(2)
(4)
(3)
(11)
(12)
(10)
(7)
(8)
(6)
(4)
(8)
(6)
(5)
(7)
(11)
(10)
(12)
(3)
(1)
(2)
(9)
(13)
ME-06746
RH
LH
(8)
(4)
(9)
(3)
(1)
(2)
(11)
(12)
(10)
(6)
(5)
(7)
(1)
(6)
(8)
(9)
(7)
(12)
(13)
(11)
(2)
(4)
(3)
(5)
(10)
15WRX_STI_US_EN.book 213 ージ 20  
ME(w/o STI)-214
Cam Carrier
MECHANICAL
(7) Determine camshaft oil clearance by matching the widest point of plastigauge on each journal against
scale printed on a package of plastigauge. If it is not within the standard, replace each camshaft cap and
cam carrier as a set. If necessary replace the camshaft.
Camshaft oil clearance:
Standard
0.037 — 0.072 mm (0.0015 — 0.0028 in)
(8) Completely remove the plastigauge.
ME-06747
15WRX_STI_US_EN.book 214 ージ 20